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Unformatted text preview: Unit 1 Review 13/12/2007 21:18:00 How did Flouren’s work undermine Gall’s theory of phrenology? • He used the ablation/lesion technique to test and prove localization of function which disproved Gall’s phrenology theory (areas of brain had extremely specific functions such as amativeness, that could be read by feeling the bumps on a person’s head) What are PET and fMRI used for? • These are used to determine the which brain areas are active during certain activities and how it takes for the brain to react What does the CNS include? Is it protected by bone and meninges? • Brain and spinal cord • Yes, protected Is the PNS protected by bone and meninges? • No Is the medulla oblongata or the cortex more similar across mammalian species? • The medulla oblongata would be more similar because it is part of the hindbrain, which is the least evolved part of the brain Where is the association cortex found? • It is found in all four lobes What is the significance of the central sulcus? • It separates the precentral gyrus from the postcentral gyrus • It separates the somatomotor cortex from the somatosensory cortex Name one unique function served by each of the four cortical lobes. • Occipital- visual processing • Temporal- hearing and learning • Parietal- touch and sensation • Frontal- motor skills What are the meninges? Name the 3 layers. What is their overall function? • 3 layers of connective tissue that protect and cushion the CNS • dura, arachnoid, pia (outward-in) What is the blood brain barrier? Where is it absent? Why is it important?...
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- Fall '07
- axon hillock, axon terminal